Initialize nix setup for the repo #2290

Job	Run time
Docker CLI tests (ubuntu-latest)	7m 22s
semanticdb-kotlinc	3m 59s
bazel_aspect	4m 15s
check	6m 32s
Tests (ubuntu-latest, 17)	13m 57s
Tests (ubuntu-latest, 21)	9m 8s
bazel	2m 43s
Maven tests (11)	4m 45s
Maven tests (21)	4m 50s
Tests (ubuntu-latest, 11)	17m 35s
Maven tests (17)	5m 15s
	1h 20m 21s

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